Usually, when a pad is not seated correctly or the spring clip isn't doing its job, the brakes make noise when going over sharp bumps but not when applying the brake.

I would try removing the claiper and rotor and cleaning again with brake fluid. Both the rotor and pads.

Tip: clean the car side of the rotor first, then mount the rotor. After the rotor is mounted, clean the outside. Then clean the pad brake surface, blotting with a clean cloth and making sure nothing touches the pad surface as you put them on. Verify that there is no pad movement before you put the spring on.

Find a lonely road and 'burn' in the new pads.