Marijuana smell in 1/4 of quadplex

[Melissa M.]

We own 1/4 of a side by side quadplex in Kansas where marijuana is not legal, (not even medical, yet.)  We have no ownership to the other 3/4 of the property, therefore no leases with anyone there except for our tenant living in our 1/4.  We have owned the property for right at 6 years.  We are on our 3rd tenant.  New tenant just moved in about 2 weeks ago and stated today that there is a strong marijuana smell in her storage space, (under her stairs) that is making her whole unit smell and she believes it is coming from the neighbors next door.   My husband and I had been out there fixing things prior to her move in and have been out there since for a couple things and haven't noticed a smell.  Having never ran into this situation and since we don't own the property next door, I'm not sure what we should do.  Any suggestions?