HIV is unable to reproduce outside its living host (unlike many bacteria or fungi, which may do so under suitable conditions), except under laboratory conditions; therefore, it does not spread or maintain infectiousness outside its host.
HIV is transmitted by;
Unprotected penetrative anal and/or vaginal sex
Sharing works with other IV drug users
Mother to child
Why is there no risk? Should I refrain from getting tested?
Your fear for HIV is irrational. HIV can't pass like that. Please forget about HIV and get on with your life.