These reports came out constantly, and were portrayed (repeatedly) as one-offs. I’m pretty sure you were on some of those threads.
Propaganda works. There’re probably a hundred million Americans that don’t thing Iraq EVER had chemical weapons - despite a decade on the news weekly for a decade before Bush even became President.
Once upon a time on an old computer I had a list of favorites that was about a 100 links long about the proof of WMDs being found in Iraq. It crashed or I stuck it on a lost thumb drive. Too bad. I’d like to go over it again right now.