How serious can nut and salmon allergies be? if i have these foods and then brush my teeth, is it possible for me to kiss a guy with these allergies?

Could kill him!: Don't take any chances, some allergies to fish and nuts are so severe, that even the the slightest amount of exposure to the allergens could be deadly! Better to avoid these foods as if you were allergic or yours could be the kiss of death!

It is serious: Various studies have found that kissing someone with a food allergy after eating something they are allergic to could make them sick, even if you brushed your teeth. Try to avoid nut and salmon altogether if you’re dating someone with a peanut allergy. Take care.

Food allergies: Some people are extremely sensitive and even being in the same room with these foods can trigger allergic reactions. Talk to,the guy and ask how sensitive he is. But for the most part it would be safe to refrain from eating these food when you are with him.