Next time watch them do it. Don't avoid it; just watch what's happening. It gets better when you face your fears. Avoidance leads to deeper phobia. I'm a 40 year old guy on testosterone replacement therapy. Needles were scary and gross until I decided they weren't scary and gross. I inject myself with testosterone cypionate twice a week. It's about as scary as taking a shower or getting dressed in the morning. Just part of the routine.