My blood? Perfectly fine. Doesn't bother me a bit.
Other people's blood? Perplexing. I just kind of stare at it and my mind races thinking of everything dealing with their blood.
My friend cut his hand punching open a window (he's dumb; we're not really friends anymore. enemies would be a better way to describe it) and he showed us his hand and everyone freaked out, but all I could do was stare and think, "What's his blood type?", "How viscous is it?", "How long until it deepens in color?", "Could you taste the food eaten through the blood?", etc.
The injury itself made me cringe, though. Flaps of skin and muscle a good sight does not make...