The general rule is that, if it's a personal expense, it's not deductible, even if you're carrying on a business. That's interpreted to mean that, if you're commuting to and from work, then any of those expenses are not deductible. If you're working at different places every couple of months, I don't know exactly where the CRA draws that line, but the general rule is that travel between work and home is not deductible for business purposes as well as employment purposes.
On November 2nd, 2022. See this statement in context.