Yew is one of the very worst toxic dusts, osage, walnut, ipe, many exotics are all possible irritants. Some seem to build up to an exposure level that makes you super sensitive or allergic.
The most effective masks have a power pack, blower and filter that forces fresh filtered air over your face. These can cost about $300 but may be worth it if you plan to play with toxic wood dust regularly.
Dust collection, air dust filter, mask etc are all good. Also, remember that dust is created by sanding and sawing. Working with sharp hand tools like scrapers and draw knives does not create dust.