Viro Fixes (#19058)

* Fixes

* Change

code/modules/mob/mob.dm

@@ -26,6 +26,7 @@
 	QDEL_NULL(hud_used)
 	for(var/key in alerts) //clear out alerts
 		clear_alert(key)
+	QDEL_NULL_LIST(viruses)
 	if(pulling)
 		stop_pulling() //TG does this on atom/movable but our stop_pulling proc is here so whatever
 

code/modules/reagents/reagents/core.dm

@@ -88,7 +88,6 @@
 				var/datum/disease/D = ID
 				if((D.spread_flags & DISEASE_SPREAD_SPECIAL) || (D.spread_flags & DISEASE_SPREAD_NON_CONTAGIOUS))
 					continue
-				M.ForceContractDisease(D)
 				D.try_infect(M)
 
 /datum/reagent/blood/affect_touch(var/mob/living/carbon/M, var/alien, var/removed)