@Rick4406 Unfortunately in my experience many guests do not read all the information and rules prior to booking and some of those that do will book anyway on the basis that ‘surely these rules do not apply to me?’.
With regards to smoking, it is a very real addiction and although guests may book with the intention of keeping it outside, there will be some that will smoke inside and think that spraying a bit of air freshener around will dissipate the ‘evidence’. We have set up a nice smoking area outside our Airbnb with a table, chairs, ashtray, bucket of sand and parasol in case of inclement weather. We politely ask those guests who are smokers to use this area.. and so far we have had no issues.
With regards to pets, that is a little more tricky. There are some that genuinely fail to notice you are not pet friendly and those that notice but decide it does not apply to them and their treasured fur baby. Some of the latter will then try one or two ‘routes’ to insist that they are allowed to bring their pet. 1) ESA, which (apart from a few locations) Airbnb no longer allow as an exception and 2) Service animal, which they do not have to prove to you. The following link shows the rules and what you can ask and expect from service animals.
https://www.airbnb.co.uk/help/article/1869/accessibility-policy
Moving forward, I would suggest that any of your guests that turn up with an unauthorised animal be asked to either cancel their reservation or place ‘Fido’ in a local boarding kennels where he/she can be ‘let out on bail’ daily for walks etc with their owner. It might be worth you contacting local kennels so you have details to hand and perhaps even negotiate a discount for your guests if you can.