The Landers family is "team science" - we are staying home as much as possible for our own safety and the safety of my at-risk, elderly parents. My rehearsals and concerts have all been cancelled for the year. If you are still participating in school music groups, here is some information that may be useful.
Keeping Your Oboe/Bassoon Clean: 1. Reeds can be dipped in 90% isopropyl alcohol for a few seconds. Let them air dry. 2. Bassoon and English Horn bocals can be cleaned with soapy water and a bocal brush. 3. Swab your instrument after playing. You can wash your swab in soapy water. 4. Cleaners are abrasive to the finish of an instrument. It is better just to wash your hands after playing. 5. Do not share instruments or reeds.
Research shows aerosolized particles exit the oboe mostly out of the bell (due to the conical bore shape and focused air stream), and the oboe produces the most aerosols out of all the wind instruments, according to two recent studies (links above). It is suggested to control the spread of aerosols by using at least a 2-layer fabric bell cover on the oboe. Though we cannot eliminate aerosols the oboe produces, we can control how far they spread, to a degree. Here is an easy DIY bell cover your kids can make and use in band class. You can even use a mask with a rubber band!
Note: for bassoon, make the filter 3" and the fabric 10" in a diameter. It is unclear how many aerosolized particles the bassoon creates, but the pressurized air stream is similar to that of the oboe.
Instrument bags:https://www.mccormicksnet.com/Clarinet-Cover-p/3070015.htm. I made one out of cotton quilting fabric - it is comfortable and easy to use indoors. Outside in humid/warm air, it is more difficult to use (keys sticking, more water problems, etc.). Non-breathable fabric will cause moisture problems and possibly harm your instrument.
Wearing a mask with a hole/slit for the reed while playing - Obviously, a mask with a hole isn't going to protect the wearer much from anything. But, a mask can redirect the player's exhaled air to an extent. I imagine band masks are minimally helpful.
For oboists and bassoonists, it may be better to wear a veil-type mask that drapes over the reed (could put a vertical slit in the fabric so the rest lays flat). It would be safer for the reed and would direct any exhaled air downward.