Here are some things we have already decided:Replace siding - probably charcoal gray with white trim.Remove the cable wires and old antenna.Replace windows, changing size, style and location as needed.Replace the 3 large windows in back with a sliding door that opens onto a deck.Remove the two doors on the right side of house in 3rd photo.

If you're keeping the siding you could just repaint a new color like light blue or dark grayish blue for window trim just do simple frames and for light blue paint window frames trim and outer doors and dark blue including garage door make sure to match garage door with front door it looks sloppy when they don't match. if you're changing the front you could try flat stone in charcoal grey and match the siding on the sides do the house with same paint color.

I've used some super duper charcoal stuff on carpet smells before to no avail.

I know I can turn the microwave into a selfcirculating with a charcoal filter, but I don't know how.

If it's a cheap replacement, do a cool mid-century mod style painted in a very deep, rich color, not used anywhere else on the front of the house.https://s-media-cache-ak0.pinimg.com/originals/4d/...Your choice of a black (or dark charcoal) shingled roof is good, it complements the brick, and will update it. 

My parents would put charcoal in bowls around the house to soak up the smell.

The couple smoked for 30 years and have tried everything such as kilz, repainting, cleaning the air ducts, charcoal,  cleaning carpet, vinger...etc you name it.

The tenant dragged a Weber charcoal grill into the LIVING ROOM and decided to cook "out"...

A nice charcoal and gas grill. 

We were initially planning to do "charcoal-ish" color on the brick with a more traditional trim/door color and stain all the wood for the front porch and carport as its a little more "neutral/normal" for buyers, but once we decided we were going to move into the house, my wife went a little more bold with the colors.