It could be considered reasonable accommodation to allow marijuana use, and as many have pointed out, there are numerous ways to ingest THC besides smoking. 

Dining Room Chair: Seat where you ingest fuel to keep going.

Timothy Hillyer just FYI from my experience and research, a bed bug ingestion is VERY difficult to completely get rid of.

After reading through the NY lease I have some questions:Section 13 (G) - Prohibits the use of marijuana including ingestibles.

Who would think when we ate peanuts, we were actually ingesting a mold?

I know that there are rumors of harder drugs being ingested and there are also rumors of dealing...and that is problematic.  

There was no concern for harm for brushing teeth, just ingesting large amounts of water with limits outside EPA limit can be harmful over time. 

For example, lead paint should never be dry scraped or sanded as it creates lead dust which is then inhaled or ingested.

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I have known an IRA investment strategy where people borrow  ( versus withdraw were u r faced with the penalty for early withdrawl and tax consequences) from their IRA or 401K and buy a  rental property and any cash flow ( as income) is ingested back into the IRA /401K as long as the cashflow is higher than the payback on the money borrowed  or they burrow bulk of their IRA/401k fund and do a flip and payback their borrowed amount.