Different smell?

Didn't know how to search for this and it's my first grow so my bad if this has been talked about before. So from weeks 5-8 of flowering my plants smelled like dank amazingness. I harvested them a few days ago and now they smell like a cross between freshly mowed grass and that shit that smells like onions that grows in the yard. Did I fuck something up here or is this normal? They look the same now since I first did the harvest so I don't think anything has gone wrong since the harvest, mold and the likes. I vaguely remember reading that if you dry something to fast it'll taste like grass/hay but that's not the case, haven't smoked any of it yet obviously. Anyways, any ideas as to why this may be?

did you flush your plants in the week or two prior to harvesting?

Normal for me anyways. It seems like they lose some of that dank ass smell for a little while when they're drying. After curing for a bit in jars it should go away.

Ya, I flushed about a week or so before I harvested. Hopefully thats the case Grizz, thanks dudes.