I do not know what wood is common in Portland. Common woods will differ between locales.
If you have lung issues then I would imagine you should't be working unknown woods.
If you are fortunate enough to know the wood you are working then I would refer to the Wood-Database as it has an extensive database with details about "Allergies and Toxicities" for all its known woods.
Take Spruce Pine for example:
Working with pine has been reported to cause allergic skin reactions and/or asthma-like symptoms in some people.
I'm sure that warning is shared among other pine species as well. I work with pine and spruce quite frequently and I don't personally have issues.
I can't include the whole table here but another article has a well drawn table including more details. That page is well partnered with another article on Wood Dust Safety.
Even If you were to do nothing else at least wear a mask
All dust has the potential to cause issues as small particles will be breathed into you lungs. A fair warning from aforementioned wood dust article:
Long-Term Damage: Forget about the large chips and visible sawdust: perhaps the most damaging element is the invisible fine dust (sometimes called “coarse inhalable particles” ranging from 2-10 microns). Basically, these tiny bits of sawdust float around the air and linger even after the tools have stopped running. These invisible particles get inhaled and cause tiny wounds and scarring to our lungs: each time this happens, it causes a very small amount of irreversible damage. The immediate effect is unnoticeable, but over long periods of time, this can result in significantly decreased lung capacity, and a number of other health issues.
I used to never really worry about sawdust but now that I'm engaging in woodworking more I try and keep at least some simple dust masks around at all times.