Human papillomavirus HPV is responsible for warts on feet.

So genital warts, mostly HSV (Herpes). Not nice but not particularly harmful most of the time. Cold sores and genital warts. Mouth, genitals. Won’t look nice but you won’t die.

HPV - cancer.

Further investigation on the evidence may be required but social acceptability chart above may be justified.

If you have a foot fetish get vaccinated against HPV everyone.