https://www.westword.com/arts-culture/meet-the-tree-thats-making-your-neighborhood-smell-like-semenville-usa-5780867/
Callery Pear Responsible for Denver's Smelly Air
Mar 31, 2026 - The invasive pest is springing up all over the country, and is particularly prominent (and stinky) along Colorado's Front Range.
callery pearresponsible fordenversmellyair
https://www.rhs.org.uk/plants/89839/pyrus-calleryana-chanticleer/details
Pyrus calleryana 'Chanticleer' | Callery pear 'Chanticleer' Trees/RHS
pyrus calleryanapear treeschanticleerrhs
https://extension.psu.edu/callery-pear-accurate-identification
Callery Pear: Accurate Identification
Learn the distinguishing characteristics to help you accurately identify the invasive Callery or Bradford pear (Pyrus calleryana) tree.
callery pearaccurateidentification