The $mambo contract allows only to burn tokens, not to mint.
That means, what is burned, is burned forever and reduces the total supply and may work deflationary.
Mambo Token contracts have a secure minting and burning code:
Only the contract owner or delegated minterburner can burn tokens, only out of his account.
Burning out of other accounts NOT possible. Read more about Mambos burning standard here.
our burning sheet: (may not be up to date):