Exodus 30:37

And [as] for the perfume which thou shalt make
As above directed:

ye shall not make to yourselves according to the composition
thereof;
that is, for their own use, for the scenting of their rooms, or to snuff up, or smell to, as in the next verse:

it shall be unto thee holy for the Lord;
separated entirely for his service, to be burned upon his altar, and to be no otherwise used.