On the finish of Ant-Man and the Wasp, earlier than they’re dusted, Scott goes into the Quantum Realm to get supplies in order that Ghost can survive. Hank, Janet, and Hope are observing. Janet even offers him some suggestions! Every part appears fantastic till, you realize, Thanos. But when Janet was so frightened of the Quantum Realm and Kang, why let Scott go down there in any respect?
The reply right here will depend on how literal you need to get. The true reply, most actually, is that the Marvel Studios staff hadn’t conceived Quantumania but so there was no purpose for it to be a problem. Taking that actuality off the desk, perhaps Scott wasn’t taking place deep sufficient to alert Kang, or Janet felt it was a brief sufficient journey that nobody would discover. There’s no technique to say for positive, however that’s our concept.