a pesar que yo uso alcohol de manos como loca

Cuidado con eso, paradójicamente podría hacerte más propensa a infecciones. En el libro I contain multitudes, Ed Yong cuenta:

“You want to bring in microbes that are benign or aren’t interacting very much, and just populating surfaces,” adds Sean Gibbons[...]. “Diversity is good.” And sanitation, when taken too far, can cause diversity to collapse. Gibbons showed this by studying public toilets. He found that thoroughly scrubbed toilets are first colonised by faecal microbes, which are launched into the air by roiling, flushed water. Those species are eventually outcompeted by a diverse range of skin microbes, but once the toilet gets scrubbed again, the communities go back to square one. So, here’s the irony: toilets that are cleaned too often are more likely to be covered in faecal bacteria.

Bajo esa lógica, podría darse que tus manos esterilizadas por el alcohol sean mejores vehículos para agentes infecciosos que tus manos llenas de microbios compitiendo entre sí.

No sé qué tan cierta sea esa lógica, pero me tinca que la posición razonable es lavarse las manos solo cuando uno va a comer o tocarse la cara.