I would not recommend canned air around any of our machines. Repairmen only use it to clean parts, not the machine under carriage or elsewhere. Instead, the mini vacuum attachments for your vacuum cleaner work great.
All of the debris is sucked up, rather than pushed further into the machine. Most of the quilt and sewing websites sell this handy set of attachments. Amazon has this for $7.31.
https://www.amazon.com/Schneider-Ind...BNNZ2065X7YDZ8