I don’t know about the rest of the house but for the microwave, try this. Put a microwave safe bowl in there about half full of water. Cut a lemon in half and squeeze some of the juice into the water, then drop in the lemon.
Microwave this for about 3-5 minutes or until it is boiling. Then, turn it off and leave the door closed for about 5 minutes. Then, open the door and clean the microwave by wiping down the sides and all.
It should be very easy since the steam would have loosened everything. This should fix the microwave problem. As for the rest of the house, I would just open the windows when it is a little cooler in the day (maybe this evening) to let it air out.