I've been growing bud since the 90s inside and outside. I don't claim to be the greatest grower in the world, a lot of what I grew was recreational for myself. Now some years ago I did grew indoor commercially and did fairly well. One of my main concerns was how do I keep that dentist office that I rented from not smelling like a family of skunks live in there. After that I had an indoor grow in the house that I lived in and had to bribe my neighbors with free weed to not say anything. This is my second commercial Venture and although all looks to be fine I'm starting my second harvest and none of my weed smells like anything. I hung it for 2 weeks at good humidity and temperature levels. I have cured it in jars for a couple weeks now and it still smells like nothing. It smelt like nothing as a seed it smells like nothing in veg it smelled like nothing in Pre flower it smelt like nothing during flower and it smells like nothing now. I have all those I have photos I have seeds from seedsman I have seeds from canuk seeds I have seeds from all of over. None of it smells what is happening I grew 400 plants and I never used a carbon filter once.
Just an unbiased theory- If cannabis produces a strong scent to attract pollinators, and cultivators are creating feminized seeds by forcing hermaphrodites to pollinate themselves, and are doing so with the plant shielded from natural pollinators, perhaps the gene or genes promoting scent is/are becoming recessive.
Just a thought, did only cursory research- mostly just the usual “magazine-spread” info from site likes leafly and grow420; not very useful in my opinion, but didn’t look far.