Flowering day 30 - Smells like doodoobutter...common?

Well.. as the title says, day 30 of 12/12, the 3 ladies that came from the same bag have the same rotten ass stank, it literally smells like swamp-ass. It has that lovely MJ undertone, but the stank is foul. The plants are perfectly healthy, just started their 2nd bud growth spurt, lovely white hairs with maybe 1% going orange/red atm. the 4th one has a familiar pungent smell to it, very pleasant.... but these 3 are just rank... are there any strains that are known to have a foul smell? (all 3 are bagseed, unknown, i'm leaning towards some kind of kush because of the way the buds look, really long white hairs, plenty of them), the trichs are still growing in, they are getting frosty... any thoughts? I'd really like to get a general idea of the possible parents =). The 3 stanky ones are indica dominant, from the look of the leaves and how quickly they are budding, compared to #4 which has clear sativa dominant traits... (long skinny leaves, nowhere near as far along the flowering process, even though they are all at 30 days from 12/12)


Thanks~ (will put some pics up soon as I get access to a camera)

Heres that picture I promised....
(high res: http://i.imgur.com/cCBQI.jpg )

check for mold
2 super silver haze (very tall ass sativas) would make my hands smell like shit when I stroked their stems with my fingers. Yes I stroked their stems with my fingers.

lmao jamblay i dont know why i thought that was the funniest statement ive heard all day

I've been looking for mold like a hawk... I doubt thats what it is, the stank seems to be a natural, earthy musk... it has a ganj hint, its just led with a dookie stank that I find odd... I haven't seen any signs of mold at all, and the RH stays around 51-56%, its never gone over 60%, has plenty ventilation, negative suction due to the fan, its a 400cfm fan working a 5x5x6 area... its probably perfectly normal for whatever strain it is... was hoping someone has had something with a similar stank, I know Skunk strains got that name for a reason...just don't know if they actually smell like a skunk...the stench they are producing might be as foul as a skunk's ass...though nowhere near as strong, maybe 1% the strength of a skunk's anal spray..

sometimes dookie smell is a good thing ?

if skunk got it's name because of it's stank... yes, very good thing ... but I don't know =]