Write in your request that you are allergic and you will also be able to confirm whether or not host’s have an indoor dog or cat in their profiles before booking.

There is also the option of mentioning that you are okay as long as they are in a separate room or outside since sometimes hosts can find a friend to take care of their dogs or cats just during the Nagomi Visit. You will have the host's contact information before the visit so just make sure to let the host know in advance by asking them directly.