Is it some pollutant in the air or water that causes this type of disconnect?
Yep, Maryland is downwind from Washington DC
(b)_ Exceptions.- This section does not prohibit:_
(3) the carrying of a handgun on the person or in a vehicle while the person is transporting the handgun to or from the place of legal purchase or sale, or to or from a bona fide repair shop, or between bona fide residences of the person, or between the bona fide residence and place of business of the person, if the business is operated and owned substantially by the person if each handgun is unloaded and carried in an enclosed case or an enclosed holster;_
CARRYING AND TRANSPORTATION IN VEHICLES
Rifles and shotguns being transported in motor vehicles must be unloaded.
It is a crime to wear or carry openly any rifle or shotgun with the intent or purpose of unlawfully injuring any person.
It is unlawful for any person without a permit to wear or carry a handgun, openly or concealed, upon or about his person, or to knowingly transport a handgun in any vehicle traveling on public roads, highways, waterways or airways, or upon roads or parking lots generally used by the public. This does not apply to any person wearing, carrying or transporting a handgun within the confines of real estate owned or leased by him, or on which he resided, or within the confines of a business establishment owned or leased by him.3
Federal and Maryland State or local law enforcement officers generally are exempt from the permit requirement. However, sheriffs and their deputies are exempted only while on active assignment engaged in law enforcement, and only with respect to handguns which they are duly authorized to wear, carry or transport as part of their official equipment. Law enforcement officers from other states are exempt only while on official business.
No violation is committed by any person who can demonstrate that the handgun is being carried, worn or transported:
To or from a place of legal purchase or sale, or repair shop.
Between such person`s bona fide residences, or between his residence and place of business, if the business is operated and substantially owned by that person.
While engaged in, or traveling to and from a "target shoot, formal or informal target practice, sport shooting event, hunting, trapping, or dog obedience training class or show."
By a bona fide gun collector who is "moving any part or all of his gun collection from place to place for public or private exhibition," and while such handguns are actually on exhibition.
During transportation to and from the above places, the handgun must be unloaded, and carried in an enclosed case or enclosed holster.4
An additional penalty is provided for any person convicted of unlawfully wearing, carrying or transporting a handgun, if his deliberate purpose was to injure or kill another person.