where could water pooling on front floor both sides under carpet be coming from? on 2007 Lexus RX350

it stinks like sewer. Pulled up carpet floor insulation and carpet were soaked.

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1 answer 3 comments
poss a/c drain plugged and causing water build up and algae,have drain unplugged
Thanks, that s what I was thinking. Where is it? And should I, not being a mechanic even try to fix myself?
its easier with a rack seek help it should be cheap
Thank you, that's what i'm going to do.