alright, you´re asking me why im so specific with this bug, well then, i spent a whole day to cure my sickness, to get information about problems in the past and what other people gave tips and tricks. so: i tried 3+4 myself, on others and they tried it on me. i could tell you the whole story and all this but that is just too uch what ive found, but heres the important thing and what i did:
-i drank out of 5 things, a CANTEEN, a PET, a POND, a WELL and a GASOLINE CANISTER.
-i ONLY got sick of the PET and the GASOLINE CANISTER
-i found out that the mechanics dont work: vitamin bottles, injection vial with syringe, purification tablets, water source (you can fill a gasoling up everywhere and fill atruck, but its still gasoline, but poured it into a pet and a cnateen and only the pet gave me the sickness)
-i used multiple ways:

1. charcoal tabs, then alcohol tincture and then vomiting
2. charcoaltabs, then alcohol tincture
3. alcohol tincture, then vomiting
4. charcoaltabs, then vomiting

only way 1. helped my, because as i said, YOU WOUNDS ARE INFECTED and THATS why you NEED alcohol because you need to CLEAN them, and DISINFECTION SPRAY didnt helped me and my mates. also you need to make it YOURSELF and becuse you dont have the option to go to someone and make "clean wounds" or something.

Vomiting DOES help, ofc you get a little bit of energy, hydration and health lost but your sickness gets out too. i vomit 2 times everytime i tried to cause that again and then i was good again.

as i said, i drank out of EVERYWHERE and only PET´s and GASOLINES gave me that, but the mechanics are broken, thats what i think at least.

and about the alcohol tincture:
if your wounds are dirty or already infected THEN you need a alcohol, because alcohol ures them and kills the bacteries, so its clean again. when it gets clean it can heal again even it doesnt make sence with water/gasoline but as i already said and im still gonna say it:
THE MECHANICS ARE BROKEN!