TIFU by mistaking chicken smell with gas leak

Me (27F) and my partner (30M) came back from date night yesterday night, to find the house surrounded with a potent smell of what I can only describe as farts. We were tired, wanted to continue our night, and kind of thought it was just lack of air circulation in the house somehow. It's been moist out for a few days, maybe that's the smell, so we thought.

We left all windows open at night and went to bed calmly. I could not sleep the whole night due to aches and partially the smell. We woke up and continued our day, but the smell of farts were still surrounding our living room. We smelled the sinks, walked through rooms, the smell was mostly in the living room but potent enough to be carried around. My partner confirmed it didn't seem to be a sewer issue, and I started to get worried. A quick google search and a few reddit posts indicated that a fart smell could be 'rotten egg' smell, which indicates gas leak. I don't eat eggs, and am not familiar with the rotten egg smell at all. However the reddit posts seem to suggest that we were approaching an imminent death if we did not take action quickly.

So, I messaged our landlord describing the smell and communicating concerns of gas leak, while also calling our utility company for an investigation. We are guided to leave the premises and call 911. I instead decide to clean the dishes before leaving as the landlord is also on his way and it's poor taste to leave dishes in the sink. I am glad we did not leave.

The landlord enters, and quickly confirms that it is not a rotten egg smell, but probably a rat that died somewhere in the house. This reassures us, and we accept our fate of living with fart smells for a while until the rat body decomposes. We eat our meals in the balcony. We live off of our bedroom for a few hours. We joke about the potential of us having farted too much and invited our landlord to smell our farts that took over the house.

We adapt to our new way of living, until dinner time. I realize we got a meal prep kit that we haven't cooked yet, and the recipe is a chicken breast recipe. We did discuss that we didn't see a chicken when unloading the bag initially, and quickly came to the conclusion that they must have forgotten it.

I read the instructions again. It clearly says chicken included. Lightning strikes. I make eye contact with the freezer bag that we left under the dinner table. I open it, and here it is. The fart smells. We handle the bag a bit more to find there was a specific pocket with a special bag in it, that held a inflated bag of chicken breasts that were there for the past 6 days.

We discard the chicken. The smell is already dissipating. We can sit in the living room again. Farts don't indicate rotten eggs, just their mother dying.

TL:DR; we left a bag of chicken in our living room to rot, and confused it's smell with smell of gas leak.