/mob/living/proc/find_nearby_disease()//only tries to find Contact and Blood spread diseases. Airborne ones are handled by breath_airborne_diseases()
	if(buckled)//Riding a vehicle?
		return
	if(HAS_TRAIT(src, TRAIT_MOVE_FLYING))//Flying?
		return

	//Now to check for stuff that's on the floor

	var/checked = FALSE
	var/block
	var/bleeding

	for(var/obj/effect/decal/cleanable/yucky in loc)
		if(!length(yucky.diseases))
			continue
		if(!checked)
			if(lying)
				block = check_contact_sterility(BODY_ZONE_EVERYTHING)
				bleeding = check_bodypart_bleeding(BODY_ZONE_EVERYTHING)
			else
				block = check_contact_sterility(BODY_ZONE_LEGS)
				bleeding = check_bodypart_bleeding(BODY_ZONE_LEGS)
			checked = TRUE
		assume_contact_diseases(yucky.diseases, yucky, block, bleeding)

	return FALSE

//This one is used for one-way infections, such as getting splashed with someone's blood due to clobbering them to death
/mob/living/proc/oneway_contact_diseases(mob/living/carbon/L, block=0, bleeding=0)
	assume_contact_diseases(L.diseases,L,block,bleeding)

//This one is used for two-ways infections, such as hand-shakes, hugs, punches, people bumping into each others, etc
/mob/living/proc/share_contact_diseases(mob/living/carbon/L, block=0, bleeding=0)
	L.assume_contact_diseases(diseases ,src,block,bleeding)
	assume_contact_diseases(L.diseases, L, block, bleeding)

///////////////////////DISEASE STUFF///////////////////////////////////////////////////////////////////

//Blocked is whether clothing prevented the spread of contact/blood
/mob/living/proc/assume_contact_diseases(list/disease_list, atom/source, blocked=0, bleeding=0)
	if(!length(disease_list))
		return
	for(var/datum/disease/acute/V as anything in disease_list)
		if (!V)
			message_admins("[key_name(src)] is trying to assume contact diseases from touching \a [source], but the disease_list contains an ID ([V.uniqueID]-[V.subID]) that isn't associated to an actual disease datum! Ping Dwasint about it please.")
			return
		if(!blocked && V.spread_flags & DISEASE_SPREAD_CONTACT_SKIN)
			infect_disease(V, notes="(Contact, from [source])")
		/*
		else if(suitable_colony() && V.spread & SPREAD_COLONY)
			infect_disease(V, notes="(Colonized, from [source])")
		*/
		else if(!blocked && bleeding && (V.spread_flags & DISEASE_SPREAD_BLOOD))
			infect_disease(V, notes="(Blood, from [source])")

//Called in Life() by humans (in handle_breath.dm), monkeys and mice
/mob/living/proc/breath_airborne_diseases()//only tries to find Airborne spread diseases. Blood and Contact ones are handled by find_nearby_disease()
	if (!check_airborne_sterility() && isturf(loc))//checking for sterile mouth protections
		breath_airborne_diseases_from_clouds()

		for(var/obj/effect/decal/cleanable/C in loc)
			if (!length(C.diseases))
				continue
			for(var/datum/disease/acute/V as anything in C.diseases)
				if(V.spread_flags & DISEASE_SPREAD_AIRBORNE)
					infect_disease(V, notes="(Airborne, from [C])")

/mob/living/proc/breath_airborne_diseases_from_clouds()
	var/sanity = 0
	for(var/obj/effect/pathogen_cloud/cloud in range(1, src))
		if(sanity > 10)
			break
		sanity++ //anything more than 10 and you aint getting air really
		if (!cloud.sourceIsCarrier || cloud.source != src || cloud.modified)
			for (var/datum/disease/acute/V in cloud.viruses)
				//if (V.spread & SPREAD_AIRBORNE)	//Anima Syndrome allows for clouds of non-airborne viruses
				infect_disease(V, notes="(Airborne, from a pathogenic cloud[cloud.source ? " created by [key_name(cloud.source)]" : ""])")

/mob/living/proc/handle_virus_updates(seconds_per_tick, times_fired)
	if(HAS_TRAIT(src, TRAIT_GODMODE) || HAS_TRAIT(src, TRAIT_VIRUSIMMUNE))
		return FALSE

	if(stat != DEAD && isopenturf(loc)) // if we're dead or inside a locker/body bag/etc, don't bother
		find_nearby_disease()//getting diseases from blood/mucus/vomit splatters and open dishes

	activate_diseases(seconds_per_tick, times_fired)

/mob/living/proc/activate_diseases(seconds_per_tick, times_fired)
	if (length(diseases))
		var/active_disease = pick(diseases)//only one disease will activate its effects at a time.
		for (var/datum/disease/disease as anything in diseases)
			var/datum/disease/acute/acute_disease = disease
			if(istype(acute_disease))
				acute_disease.activate(src, active_disease != acute_disease, seconds_per_tick)

				if((src.radiation > 0))
					if (prob(50))//radiation turns your body into an inefficient pathogenic incubator.
						acute_disease.incubate(src, 1)
						//effect mutations won't occur unless the mob also has ingested mutagen
						//and even if they occur, the new effect will have a badness similar to the old one, so helpful pathogen won't instantly become deadly ones.
			else if(istype(disease))
				if(stat != DEAD || disease.process_dead)
					disease.stage_act(seconds_per_tick, times_fired)
	else
		//Slowly decay back to regular strength immune system while you are sick
		if(immune_system?.strength > 1)
			immune_system.strength = max(immune_system.strength - 0.01, 1)

/mob/living/proc/try_contact_infect(datum/disease/acute/D, zone = BODY_ZONE_EVERYTHING, note = "Try Contact Infect")
	if(!(D.spread_flags & DISEASE_SPREAD_CONTACT_SKIN))
		return
	var/block = check_contact_sterility(zone)
	if(!block)
		infect_disease(D, notes = note)