I bake all my chicken breasts, hamburger patties or turkey burger patties at once and then freeze the ones I don't use in Ziploc freezer bags (wrapped in something else inside the baggies).
Anything aromatic can make the garbage disposal smell nice: lemons, limes, oranges, clementines, cilantro...
Instead of just standing there waiting for the microwave to heat something up, use that couple of minutes to wipe down the counter or the outside of the toaster or whatever.