 [ Symptoms ] what are the negatives to smoking herbs i know someone who is doing this as he says to help with insomnia i do not know what kind of herbs they are he was using some sort of inhaler made of wood then he was using a glass bong i do not see any positive affects to doing this any information will be much appreciated [ Disease ] com since rash is a main characteristic sign and it is not present then i think it is not but it looks like a gastroenteritis … get a stool test and keep him dehydrated as possible in this case metronidazole 500 is helpful