Are certain types of wood such as exotic woods more harmful when inhaled?

Indeed! Some kinds of wood, like mahogany and ebony are known to be riskier when breathed in compared to softwoods due to the dust they emit that can worsen allergies and respiratory issues for certain individuals. These exotic woods contain substances such as quinones and tannins that may lead to sensitisation over time and result in health problems like asthma or skin irritation, for those exposed to them regularly.
Inhaling dust from woods can also increase the chances of having long term health problems like a risk of developing nasal cancer over time. Individuals working with these types of wood should be extra careful by wearing protective gear such, as masks and by enforcing strict measures to control dust and reduce exposure levels.