I polluted my homestay's house by cooking smoke?

[torin7]

Sorry about my English skill first.. I hope I could make my problem clearly. I m a visa student in Canada and I do not know Canadian law at all.

This Wednsday , I forgot to turn off the fire after cooking. And the oil and food residual made lots of smoke in the rooms. My homestay is asking me to pay for cleanning the pipeline (smoke made it dirty and smelly) and the broken pan and fee of repairing the wall. I can understand the first two request. But I do really can not accept the last one. Firstly they say they need to repaint because the oil molecule(smoke) will permeate the wall , the wall will be easily fired after. However I asked many people , ask online, ask my teacher ,they all say it does not matter. So I told them yesterday
However. They persisted to repaint it and they change a reason to say that the smell permeate into. They have to repaint it. My mom told me that the smell won't stay in the wall and someone answered me online the wall does not have such ability to absorb.
By the way they said that some mean homestay will ask u go out immediately if they were really angry about the disaster I ve made. They do not sue me because I m a high school students. No university will accept me if I m sued and have the record of it. (is it real?).
Oh and te smog was very thick but the smoke detector did not alarm. So is it their responsibility to make sure the smoke detector is working?
Like is there any law about the house must have smog detector working?
I m not saying I want to take off all my responsibility off. But I think they are too over to want me repaint.
Any one could help me? Thanks alot

[lundie]

Here's a list of things to get:

One 5-gallon bucket (orange ones from Home Depot)
Sponges
Gloves
Three or four boxes of baking soda
Mild detergent (Cheer, Mr. Clean, Ivory Snow, etc.) Any detergent that works well in cold water will suffice.

Mix detergent and one box of baking soda in bucket with around 3 gallons of cold water (DO NOT use hot water), wear gloves when cleaning the walls if you have sensitive skin. Try a small area to see if the soot comes up, you may have to repeat the process to remove all of it. Keep your wash water clean frequently so you aren't spreading soot everywhere.