Good Deed Averted

I was cruising around on the horrible subway yesterday. When I got to my stop there was an oldish lady trying to get on with a cart full of bags. It was too heavy for her and she needed help getting it up the two inch difference twixt platform and train. She called out for me to help her. It was very slow and I was the only one around so I figured I would play the boyscout and help her up for my daily good one. As I was about to grab the bottom of the bags I was struck by a wave of stench that washed over me and I noticed that this was no lady, but a female bum. I faltered. Looked around confoundedly. Nearly was so shamed as to grab the bags and push her in any way but I couldn't. It was too filthy. It would have been like putting my hands in an anus. I sprinted out the exit as she hollered after me.