@Suzy2....Hi Suzy, 99% of the people you host will turn out to be lovely people who will bring so much joy to your life but.....if there is someone that you feel uncomfortable about, decline in an instant! It is your home, your sanctuary and a bad guest will destroy that comfortableness you feel in your home forever more. To hell with the consequences, if it doesn't feel right, don't do it.
And you will find, Airbnb are very reasonable and will not penalise you if you feel there is a genuine problem with a booking.
God almighty....by association at times I am almost ashamed to be a male!!! cheers.....Rob