Maryland Health - General Section 24-808
§ 24-808.
  (a)   No Program staff member or Program participant may be found guilty of violating § 5-601, § 5-619, § 5-620, § 5-902, or § 5-904 of the Criminal Law Article for possessing or distributing controlled paraphernalia or drug paraphernalia whenever the possession or distribution of the controlled paraphernalia or drug paraphernalia is a direct result of the employee's or participant's activities in connection with the work of the Program authorized under this subtitle.
  (b)   Notwithstanding the provisions of subsection (a) of this section, a Program staff member or Program participant is not immune from criminal prosecution for:
    (1)   The redistribution of hypodermic needles or syringes in any form;
    (2)   Any activities not authorized or approved by the Program; or
    (3)   The possession or distribution of controlled paraphernalia or drug paraphernalia or any other unlawful activity outside of the Baltimore City limits.