i have smelled blood strongly before, even before wiping. i was dripping blood silently. it was due to a fissure in my tissue and the blood never clotted ofcourse, it was just like water but i could smell it without even undressing. i was fine the fissure was not anywhere near the baby. it healed on its own in about 5 days... a week id say. bu thats the only time i smelled blood horribly.