Combustion and pyrolysis of sulfides and organosulfurs
I'd expect $\ce{H2O, CO, CO2}$, and $\ce{SO2}$ to be created during the combustion of these compounds. I'd wager a decent amount of $\ce{SO2}$ was created, but was diluted in the atmosphere.

Regarding $\ce{H2S}$, maybe it was produced, but then reacted according to the following:

$$\ce{H2S + O2 -&gt; SO2 + H2O}$$

Additionally, there were probably a wide variety of odd sulfur compounds, but their existence was transient as they reacted to form $\ce{SO2}$ for instance. Furthermore, the authorities may not even be looking for these more complex molecules.