ive been lazy on small tanks, and ive been starting siphons with my mouth for a while now. I can start it without sucking as ive been in the hobby for a while its just ive been working on a small tank and its harder to start. so i get and weekly mouthful of tank water. thought that was fine until about last week when i developed a partially nasty mouth ulcer. it seems to be not your standard mouth ulcer ( ironically the advise is to gargle saltwater) and ive been wondering if some bacteria from the tank has infected my mouth somehow? am i just being sft and its fine or have ive been stupid and been drinking fish faeces. sorry if this is tmi.

