All jurisdictions have an Environmental Regulatory Agency such as the Environmental Protection Agency (EPA) in the United States and Environment Canada. 

Each state or province also has its own environmental arm.  You should be aware of what your local rights are as a citizen at both levels.  We have provided links to the Regulators for your convenience.  If you have an odor concern, these links will provide you with the contact information for your local regulator.

What you need to know:

Health Issues

Hydrogen Sulfide gets new look from EPA

World Health Organization
 Hydrogen Sulfide – Human Health Aspects 

Regulations 
Where possible we have provided links and contact information to the Regulators in your State/Province for any odor concerns you may have.