Sorry, but the manufacturer didn't provide HMIS® data for that product. And you're right--it doesn't have unusual fire or explosion hazard--it's usual ones. As that MSDS states, water, foam, or CO2 can be used to extinguish the product.
I bet some folks here will recognize the top components of the Revenge Rodent Smoke Bomb and know what other product is composed of
Just a word of caution...I selected that brand only as an example. We don't know what brand was used in the neighbor's house.
To the best of my knowledge, we also don't know when the smoke bombs were placed in the house, how many, and how many actually were activated. We don't know if any fingerprints were found on them. We don't know if other people, including the current owners, might have had access to the house and a reason to use the smoke bombs.
Lastly, my point was that if someone really wanted to start a fire, those smoke bombs are not useful for the purpose without an ignition source and/or accelerant. Also, the house is said to be under construction. If there were areas of the house still open to the elements, those smoke bombs would be even less dangerous. They are manufactured to be safe when used as directed and, in general, are intended to be used outdoors.
In all the many articles we’ve read
online, perhaps you read, as I did, that there were kids in the park shooting off “smoke bombs” that week.
I sure hope they had proof that John Wheeler did it before blaming him. Then again, that might be too much to ask from the media.