My immediate reaction is - DON'T DO IT! You've done amazingly well - don't jeapordise the great work you've done so far...
Being more considered, I thought I'd better google a few recipes for black bean sauce so I have a better idea what we're talking about.
It might be low carb, but it's certainly not no-carb! Rice wine/sherry, shallots/spring onions, garlic, sugar... Plus, coming from a take-away, it's very unlikely to be the healthiest version around, and the chicken will certainly have been fried in fat.
All in all, it's bound to knock you out of ketosis and you'll have wasted several days of tfr.
Can't imagine how tough it must be for you to be living with nice smells, but really really hope you'll find the strength. Maybe try making yourself some strong coffee or tea to create a different smell? Whenever I get a craving I make sure I go and get a drink, even if it's just fizzy water (it seems to have more "taste" than tap water, to me!)
The best of luck to you, Mx