I am not aware of any treatment that can make wood more resistant to fire. Wood rot, yes. Fire, no.
There are several fire retardant chemical treatments available; differing mostly in whether they stand up to weather or not. More traditionally, salt-based impregnations were used, and they still are useful if used internally.
Of course nothing will prevent fire permanently, but the development of a structurally threatening fire will be delayed. And, there are places where structural wood is superior. A wood beam is stronger under prolonged fire load than a steel beam, because while the wood beam will catch fire and break, the steel beam will lose its structural integrity quite fast, and become boiled spaghetti with the wood still standing. Because of this, structural steel in buildings needs painting with fire retarding paint, alternatively it needs boxing in with double layer (2x13mm) drywall. Parts of the 9/11 structural failures were intimately related to this; the release of lots of burning fuel heated the structure way above where it could hold things together.
Reinforced concrete is probably the safest, but it is not immune either.
The structure I live in was originally built in the 1860's.
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The exterior siding is both vinyl and aluminum.
The decent thing to do would have been a bit more than 50 grams of C4. Instead of molesting the house with el-cheapo siding. (This is a matter of taste, not directed at you, because you're only a tenant; I'm just appalled at the lack of respect.)
All of our fire/CO detectors are chained together. If one goes off they all do. Our fire dept is all volunteer and just the DRIVING time from the firehouse to here is over 10 minutes. So it COULD be as long as a half hour before any apparatus arrives. Is it a risk? Sure is.
My apartment complex was "grandfathered" as far as code is concerned due to it's age. To make it meet all modern code would require ripping the entire building down and starting over. Modern new construction multi-family apartment complexes can be wood frame construction but require masonry fire break walls every few apartments. Some areas require sprinkler systems.
All tenants have a fire extinguisher provided by the landlord. And once a year the Fire Marshall inspects the complex for fire code violations.
All those enhancements probably will make up for some of the deviations from code. But the wood framing probably will save people should the house catch fire. Of course, they will then be left to suffocate in the PVC smoke and get incurable burns from the molten aluminium.