No cause of action shall arise against a licensee for the failure to disclose: (i) that an occupant of the property was afflicted with Human Immunodeficiency Virus (HIV) or any other medical condition; (ii) that the property was the site of an act or occurrence that had no effect on the physical condition of the property or its environment or the structures located thereon; (iii) fact situations on property that is not the subject of the transaction; or (iv) physical conditions located on property that is not the subject of the transaction that do not have a substantial adverse effect on the value of the real estate that is the subject of the transaction.
225 ILCS 454/15-20