Have you reviewed the ordinances in your city to see what the rules are regarding chickens?
I'm in the suburbs so not exactly in town but it is still in a city. Just about an acre. Fortunately, the property has a fairly narrow road frontage a little over 100' and widens as you move toward the back so it is long and narrow but much larger at the back where I've had a big garden and as many 5 chicken coops. I've raised chickens many years for meat and eggs. Usually anywhere from 40-100 birds.
No one even knew till there was a newspaper article about me which led to a one year battle to change ordinances. Which we won.
As I'm sure you know, the smell is all about stocking density, bedding and feed. If you over feed protein, that creates ammonia in the bedding as excess nitrogen is excreted in waste. The more chickens confined in the space, the greater the smell. When I was in the news, several tv stations came out to interview and one of the reporters looked at me with a shocked expression after sticking his head in a coop. I asked what was wrong. He said, "There's no smell". I said, of course not, if you manage them well, there never will be.
I'm sure the publicity was largely responsible for my legal success but it was close. I think city council vote was 4-3 in my favor.
A key is to not try and raise 100 meat birds at a time. Perhaps 20 or 30, butcher some early(3.5-4 weeks) as Cornish game hens and let the others grow for a bit.
I hatched a lot and when I had 100 birds, a significant number were chicks and adolescents.