Engine noises (Normal or not?)
 

I have a 2020 cx3 and once the engine is warm I have a repetitive hissing noise where my air intake enters the intake manifold. Is this a normal sound for a Mazda engine? Secondly once I shut off my car, about a second later I get an audible "swoosh" of what sounds like pressure being released. I tried to upload a short video of each. Thanks in advance for any response.