Period blood can smell for a few different reasons, from infections like BV to leaving a tampon in your vagina for long periods. It's normal for period blood to have a slight scent.

The first officer also detected a slight odor, it added. After the plane took off, the flight attendants told the captain that an odor had been detected in the cabin, per the TSB report.

A slight odor and low level of gas were detected in the unoccupied part of the building, and crews determined the source was an HVAC unit on the roof and shut down the unit.

HOPEWELL, Va. (WRIC) — The City of Hopewell says residents may notice at “slight chlorine taste and odor” in their water on Monday due to an annual flushing of the city’s water ...