The Science of Smell: Monell Chemical Senses Center
What: More than 100 scientists and technicians study taste, smell and chemosensory irritation at the independent institute - the world's first such center when it was founded in 1968.
Why: The work touches on issues from obesity to diabetes, pheromones, environmental pollution and homeland security.
Where: Monell occupies a 60,000-square-foot complex at 3500 Market St. in the University City section of Philadelphia.
Trimethylaminuria: Inquiries are handled via the Web.
