Terpenes are fickle; they don’t want to stick around for very long if they aren’t being treated well. Take this as an easy first cue in determining whether or not your cannabis is smoke-worthy. A vibrant bouquet of terpenes is typically an indicator that your cannabis is fine, although it’s important to detect other penetrating scents that may indicate a compromise in quality.
Musty, mildew smells may be a red flag for mold presence. Chemical aromas could be a sign of improper pesticide use or flushing opportunities. Improperly stored cannabis may also draw scents from their containers. Any of these unwelcome smells that you may come by should prompt you to put the herb down and reconsider. Even no smell at all is fishy, so if you’re concerned, see if any of these additional cues also raise red flags.