Messy is better than filthy.
Smells clean, it is clean.
Alternate: spray cleaner in the air to give false appearance that you cleaned. Both provide the excuse that the smell gave you an allergy attack so you must only allow guest in to the backyard due to said allergies.
Alternatively, ignore entire mess and bake cookies. They may think you are a slob, but they will forgive you anything if you greet them with hot, delicious cookies.