It depends on which tick, this year I ran into a dog tick, a sight not for the faint of heart. He stuck in the head of the child, the child complained of headaches for 3 days, until they found him. This skin color is 4-5 mm long. We didn't immediately understand that it was a tick. I was terribly frightened, what only assumptions were not before the arrival of the doctor. They pulled it out quickly, but the memories are not the best. The doctor said well that they had time before the offspring, supposedly this tick drinks blood after it bursts and the children crawl out of it, immediately suck ...
It is unlikely, so if the tick has already bit into the skin, it will fall off if only they get drunk with blood. If the tick is in the animal's fur, then there is such a possibility, the tick can either climb directly onto the human body, or fall on the sofa in the apartment, and then climb onto the person sitting on this sofa.
Therefore, be careful , examine your pets, use special sprays and collars for them. Use sprays for yourself. And at the summer cottage, touch the grass and, if possible, process the site.
I think yes, quite, but only if he decides to unhook from your dog. After all, when he stops feeding on the animal's body, he, logically, will need a new source of nutritious raw materials. And the owner is quite suitable for this role.
But it also depends on which tick.