Two runs in a row have produced no visible signs of mold but the buds all have a musty or unnaturally lemony ammonia smell mixed in with the original terpenes while still growing and after chop. I’ve had this happen with improper dry/cure in the past but with these 2 runs it has happened with living plants around the .6-7 week of flower. Humidity stays low and air flow is good. I’ve actually been more attentive to humidity,temp and airflow than ever so I’m really scratching my head over this. Long story short, good smell starts to fade around week6-7 and a musky smells begins to come on. This change happens fast within days. When pinched, bud will have a strong acrid smell that stings the nostrils but if just rubbed on outside it still smells good. Over the course of the next week or so the smell of bud in grow room dramatically weakens and what your nose is met with is a musky smell. I’ve yet to see any visible mold and it’s a shame cause the buds are beautiful and potency is there. I’ve been perpetually growing for over 5 years and the only thing that’s changed is the last two harvests have been at my new place. Perhaps I need to move