after reading about these types of experiences on here so much it finally happened to me the other day.
2 little dogs in the yard, it was fairly clean, i didnt see any crap anywhere, just smelt real doggy!! Well i was reeling the hose in and there seemed to be a lot of dog hairs on it and a bad smell of dog, got to the end and noticed brown on my hands!!...and on my boots and on my trousers and all over the hose!!
I could have cried! lucky i was near home and it was lunch time, so i headed home and scrubbed everything with hyperchlorite and washed it off.
took me all day to get over it lol!!!