Is landlord responsible for smoke odor?

[Account Closed]

I have a rental property which has smoke odor in one bedroom when we purchase it. We did a deep cleaning then rent it out. The renter are complaining about the odor in the whole house now, and we do not have odor appendix in our contract, I wonder are we responsible for the cleaning at this moment? I would help if it is only one room, but they are asking for whole house now...

[David Linq]

@Christian Bors We have a similar situation. We rented out a property that no one knows there is smoking history(even we did not find it out, sad. We just bought the house in summer and rented it out).  Now the tenant turned on the heater and they were annoyed by the smoke odor. They did tour the house twice before moved in last week. I wonder am I legally need to remove this or not, and how to handle this properly? They seem to be good tenants.