How many people living with you smoke?

Start smoking cigars.

for example smoking in the apartment or being loud past a reasonable hour.If an occupant who isn't on the lease is involved in domestic violence against my tenant, will I have the ability to evict them from the property even if the tenant wants them to stay?

Plan accordingly with detailed leases on parties, number of occupants, no smoking,  quiet hours, etc. so it doesn't degenerate into a frat house.

The only other idea if the ozone machine doesn't work that I can think of is calling a water damage / smoke damage restoration type company. 

My team and I are working on a mid 70s 150 unit apartment rehab and our hallways smell like must and old smoke due to limited/low airflow in the 4 feet wide by 200 feet long enclosed hallways.

Additionally, each unit has to have the new 10 yr smoke detectors per state law.

I would at a minimum install smoke/CO2 detectors and provide fire extinguishers as appropriate. 

One of the tenants has been in the unit for a decade and has been smoking in their unit.

Liquor stores, smoke shops, check cashing places, pawn shops, doughnut shops, cheap motels.