Q. Dear Rabbi, if someone is in a hotel and enters a public bathroom and she sees cut nails on the floor, does she have to look for another bathroom.

A. On a similar question 2082 regarding nails found inside a kosher restaurant bathroom used by waiters, we wrote”

“No Danger in these nails as Mishna Berura (260: 6) mentions that indeed when the nails are moved from the location they fell, preferably to another room, they cannot do any harm.

Moreover, Melachim Omanaich (14: 18) quotes Horav Chaim Kanievsky Shlit’a that it does not apply to Gentiles, as they also are not affected by the Ruach Ra’ah or the spirit of impurity that rest on one’s hands after sleep.
Horav Shlomo Miller’s Shlit’a opinion is also to be lenient.

Rabbi A. Bartfeld as revised by Horav Yaakov Hirschman, Horav Dovid Pam, Horav Aharon Miller, Horav Chanoch Ehrentreu and Horav Kalman Ochs Shlit’a.