This morning DH was running along the Thames towpath as he often does. He was running quite fast as he's training. There is an area where the path narrows a bit and he had caught up and was running behind a woman. He thought she moved to one side to let him pass, so he ran up behind her, at which point she screamed and suddenly sprayed him with a spray! Most of it got on his t-shirt but some of it also also got on his neck and lower face, though he didn't realise at the time. She screamed at him to get away from her and then ran back the other way. He was saying to her, "It's ok" etc, but he said she was so freaked out and looked so terrified he didn't try and follow her.
Now he has a zig-zag pattern of red up his neck and on the left side if his face and it really won't come off. He went into work and someone told him its probably a dye that the police use to mark criminals! I looked on google and it looks as if you can buy a red spray dye that won't wash off for 7 days! If it's this, it's a nightmare as he has to go to China on business tomorrow.
DH feels bad that she was so scared and her reaction actually scared him. He thinks maybe he should have held back, but he thought she was letting him overtake her. I think her reaction was a bit extreme though -AIBU? I run down that path frequently (although not at 6.30am) and I have never heard of anything like this.