It's slightly less flattering when the motel manager then takes an aerosol air freshener and sprays the heck out of their office once you leave :)
I suppose it's unavoidable: no matter how clean I may start the day, by the time I get to the motel in the destination town I've ridden 70+ miles, hard, in humid conditions with a long-sleeve top. A shower and change of clothes are the first thing I do after checking in, but obviously that doesn't spare the person handling the check-in.
What I'm thinking about doing is getting an attractive but thin silver chain, hanging one of those green Christmas-tree air fresheners on it, and wearing the thing around my neck as jewelry. That would at least acknowledge, in a humorous way, that I'm aware of the issue :)
I mean, for a while the fashion was for hip young adults to wear pacifiers around their necks: my air freshener would add function to fashion.