besides charlie, i'm probably the 2nd biggest proponent of "healthy dirt" here. that is not to say that you should take chances getting others sick. but there's a point where being clean is unhealthy.
that said, you really don't want to bring a black light into a hotel room.
just be sure to pull off the beadspread as soon as you enter the room. they don't get laundered/cleaned as often as other things in the room.
and never ever get ice from a machine that has the ice exposed. only get ice from a machine that dispenses it directly into the bucket.
A true lover of nature does not despair now that his mistress has turned a colder cheek.