Interesting, never heard of the IIR filter before, will keep in mind as one of the options if I ever worked with removing noise again, thanks for sharing!
You are already using the IIR filter as part of one-euro filter. The 1€ filter is an adaptive filter that uses first-order IIR, also called exponential filter as its bases. Depending on your filtering parameters you can turn off the adaptive part and you are left with just the IIR.