they say a broken thermometer poses threat , because elemental mercury vapourizes in room temperature, so once ingestsed and being in a person's GI track for at least 24h, how do we know it doesn't vapourize there, temperature there being HIGHER than room temperature? Plus there is the methylation issue from candida/bacteria in the GI track.

What does everybody think? Is ingestng mercury from a thermometer really that harmless?