I was thinking this too lol but instantly thought whoās been here šš¤¦š½āāļø
Try not to read into it too much itāll drive you crazy. If you have no other reasons to assume the worst, just forget about it.
I constantly find hair thatās not ours. I put my coat on chairs, we use public transport, my kids in nursery. Hair can come into a house like dust xx
Couldāve blown in when someone was at the door (postman/lady, delivery driver) Couldāve come in on someoneās shoes.