Important background context: DH and I both work hybrid, flexible wrt days on-site or at-home. DH has a good habit of going for a jog every morning before he starts work.
My problem is that he frequently "helpfully" starts a laundry load containing his gross sweaty sports kit plus whatever he finds in the family laundry basket - and he'll do this whether or not one of us is at home that day. So of course what happens is the wet laundry sits in the machine all day, festering and developing that "fermented wet laundry" smell that is really hard to get rid of.
Today for example DH started the laundry early in the morning and swanned off to work (I had already left), I got home from work after 4pm, opened the washing machine, nearly died of the smell, had to run an extra rinse cycle with vinegar, then had to hang out the laundry at nearly 5pm. So chances are the stuff won't even get dry by bedtime and will probably still have the lingering smell 🤢
I have reminded DH numerous times to check whether I'm going to be at home before he decides to run a laundry load or at least to avail himself of the amazing time-delay function on the machine so it finishes later in the day! (Today he definitely knew I was out because he even asked me to pick up something from the shop near my work!) Yet he keeps doing this 
I have a suspicion he simply can't smell the fermented wet cloth smell although he claims to understand my objection. DC and I can all smell it, our pet hate is the clothes that seem to have been de-smelled, but then when you put them on and your body heat warms them up slightly, the stench is back and wafting all around you 🤮 It probably wouldn't bother me as much if DH would just do this to his own clothes, but he always adds everyone else's clothes into the load.
IABU - What a helpful domesticated DH, and what is this smell you mention anyway?
IANBU - There was a reason why the time-delay function was invented, and that festering damp smell is one of the low-key worst smells!