2012 Prius c moisture and smell coming from black floor mats

Hi everyone,

I have a 2012 Prius c. Yesterday, I woke up and got in my car and it smelled horrible (like laundry kept in the washer too long). The smell was strong enough to even make my garage smell bad. I was able to sniff out the primary source of the smell to the backseat floor near the driver side, and when I lifted the floor mats, I noticed condensation underneath both sides of the backseat.

I did a bit of research and it seemed like the likely culprit was the A/C drain being clogged. However, today, when I drove my car, I did notice the car dripping condensation, so I can't imagine it is clogged. Also, the wetness was specifically located in the carpets of the backseat - I couldn't detect any moisture in the passenger side floors.

Hard to tell if there's a smell coming from the A/C vents since the car smells in general now. It's hot in Texas so I suppose mold can grow quickly but I was surprised by how my car turned rancid overnight.

Anyone have any ideas? I'm going to go ahead and try cleaning out the A/C regardless, but curious to see if anyone has ideas.

Thanks!