@Valerie283 ABB treats the no infants/no children as a suggestion not as a rule. You will need to outline it in your listing and you may still need to sometimes correct a guest who thinks that the policy is optional.
@Valerie283Airbnb is anti-'everything', so up to you to convey (via script) the parameters for your place. A guest can even bring a big fat ugly lizard on their shoulder and claim he is their 'Emotional Support Assistant' (or whatever such nonsense is called nowadays). 😄
The above people are quite correct. I have specified in my listing that children and even person under 21 years of age are not allowed. I also state that it is for couples and singles only! I have had one mother that tried to book and I declined with a nice reply. Remeber it is YOUR house and not the property of anyone else, so therefore as long as you are not unreasonable or offensive then I feel that you make the call of who stays and who doesn't.