There is a National University of Singapore (of which Breathonix...

There is a National University of Singapore (of which Breathonix is a spin-off) patent application for a breath collecting tube, and while it says a VOC detector can be attached, there is no claim for the VOC detector. Of coures, the 18 month blackout on patent applications applies, so we can't see what's in the pipeline.

WO2020263185A1
https://worldwide.espacenet.com/patent/search/family/074062095/publication/WO2020263185A1?q=WO2020263185A1
Disclosed is a breath sampling device comprising a buffer tube, sensor module and breath sampling port. The buffer tube has a proximal end into which a user exhales and a distal end opposite the proximal end, the sensor module is at the distal end and used for measuring parameters of a breath exhaled by the user into the buffer tube, and the breath sampling port is disposed between the proximal end and distal end. The used exhales into the distal end and a portion of the exhaled breath can be diverted into the sampling port substantially without contacting the sensor module.