A street dog whose age is 1 year comes to my house everyday he sleeps eats and he is healthy ( touchwood ) . Okay so I was just playing with him and once he slept I didn't washed my hands . There was a sudden itch in my nose so I did it. Out of nowhere a sudden thought came in my mind that whether the bacteria on the dog fur got transmitted to me via my nose and that bacteria travel through my nose to my brain and can cause infection there . I know it is weird . But this thing is going on in my mind. Is it possible to happen ?? I want to know. Please help.