It’s a different brewing method using pressure through a filter, resulting in a more fragrant brew.
I use a recipe that just brews in an inverted Aeropress for 10 seconds, so it comes out faster too, although most recipes call for brewing for longer.
But the quick method is great if I’m in a hurry that morning.
One downside to Aeropress is consuming paper filters, but I also have an aftermarket reusable metal mesh filter, and it works great.
Another downside is the dreaded “inverted Aeropress” disaster, which I recently experienced. I hold it by the plunger now ;-)
I alternate using both french press and Aeropress to keep from getting bored with my coffee.
A standard vented coffee bag has… a vent. So some smell is expected.
I just keep old coffee bags around if I need to store grounds or separate smaller quantities of beans.
I believe the objective is to reduce beans’ and grounds’ exposure to air, to reduce oxidation and flavor oil evaporation, so a standard coffee bag is the best way. Just squeeze out most of the air as you’re resealing it.
Storing in airtight jars leaves too much air, IMO.