DON'T PANIC!(unless you have to)
I don't think this is the cause of human yeast infections ( You unhygienic people! LOL).
Meet Malassezia pachydermatis, one of the common residents of your doggie's or kitty's skin. In normal pets, they can be seen in small numbers though may greatly increase in number if your dog contracts skin infections. This may also be found in ear infections of your pets. Usually this organism likes the warm, wet and unexposed areas of the skin; talk about axilla, ingunals, chin, skin folds and the ears.
If you are immunocompromised then maybe you should. Recent studies revealed that neonates and those with poor immune status may be affected with M. pachydermatis. Though humans also have a normal skin commensal of the Malassezia genus, the M. furfur, M. pachydermatis was also implicated especially in humans exposed to pets like me. (waaaah!!! panic! panic! LOLz)
I guess, it's just about health. Once you are immunocompromised, then you should atleast takeprecautions. If you are constantly exposed to pets, then hygiene comes. Consciousness helps.
Got to go now. I still have to to a self check!!! LOL