How are we supposed to answer that? We know nothing of the construction of your house. Are the eaves vented? how many attic vents? any gable vents? 1 or 2 story atic? yada yada yada
You have a nose, when it starts to smell inside, go outside and walk around the house, especially near your neighbors and SNIFF. If you can detect it, they can too. If you take the advice that was already given to you, you won't have to worry about it to begin with.
Either 3 times a charm or 3 strikes and you are out...