The Ammonium...

Okay, question time.

I haven't had it for a good wee while now but did get it recently. When I get a cold, certain foods take on a rather overpowering ammonia sort of aroma. Foods that don't normally have that smell or taste. I think it's acidic type foods. Salt and vinegar crisps and tomatoe sauce. Normally I'll quite like them but at the tail end of cold recovery, they can be rendered inedible because of this change.

Does anybody ever get that?