Can an apartment prohibit cannabis/weed if the lease allows smoking in a legal state? NJ

Just as the title says. Our lease explicitly states we are allowed to smoke in the apartments (it does not specify only cigarettes or prohibit weed), however, our property manager sent out an email to everyone saying we can’t smoke weed in our apartments anymore, citing the fact it’s still illegal on the federal level. I don’t wanna reply to the email asking questions either because then I feel like it’s an admission of guilt lol.

Of course the lease as the generic “no illicit drug use” section but does that include weed in legal states? Thanks in advance!

Edit: just want to thank everyone for all of the great advice!