What is the "smell" of solid sulfur
The primary candidates for volatilization of odorous sulfur gases are $\ce{SO2}$ and $\ce{H2S}$.  Unless the elemental sulfur has been physically ground and dispersed into the air it is not likely the direct source of the smell.

According to the International Volcanic Health Hazard Network, who of course study gaseous volcanic emissions with respect to safety issues:  


  "Sulfur dioxide ($\ce{SO2}$) is a colourless gas with a
  characteristic and irritating smell. This odour is perceptible at
  different levels depending on the individual's sensitivity, but is
  generally perceived between 0.3-1.4 ppm and is easily noticeable at 3
  ppm."


Regarding $\ce{H2S}$, according to the US Occupational Safety and Health Administration (OSHA), $\ce{H2S}$ has a perceptible smell at between 0.01 and 1.5 ppm.

The two gases have different smells, $\ce{H2S}$ being that of rotten eggs and that of $\ce{SO2}$ being described as "pungent and irritating".  So that would be one way to differentiate which gas you are smelling.  

The most likely candidate is $\ce{SO2}$ as our air is generally oxidizing, and to me elemental sulfur smells more like $\ce{SO2}$ than rotten eggs.