Considering it is against federal law. IIRC still a banned substance under the CBA.
I do not understand why it would be an issue..
If the NFL does allow team members of Of two teams to use then what about those visiting players before of after games. To or from the airport.
Laws are laws rules are rules.
If it is that important for you to light up then quit your multi-million dollar NFL contract and do so.
In that context then it is probably not all that important.