Maryland Health - General Section 3-307

      (a)      In the performance of official duties, a health officer may enter and inspect any private house if the health officer:

            (1)      Has obtained consent to enter and inspect;

            (2)      Has obtained a warrant; or

            (3)      Does not have time or opportunity to obtain a warrant and an exceptional or emergency situation exists.

      (b)      In the performance of official duties, a health officer may enter any place of business or employment.