Mice can detect the Rh factor in each other – Part 2

It has been a couple of years since I posted this:

Mice can detect the Rh factor in each other

Unfortunately the top video has been removed in which Jordan Peterson claimed that mice can detect the Rh factor in each other via smell.
Here is another study that you may not have seen:
“The Rh blood group system is of clinical importance in blood transfusion and as the cause of hemolytic disease of the newborn. Other than their role as carriers of Rh antigens, very little is known about the function of the Rh polypeptides. As a first step to generate an animal model system in which to study the structure and function of Rh, and to extend the phylogenetic analysis of RH genes, the Rh homologue from Mus musculus was characterized. Comparison of RH from humans and mice revealed 71 and 58% sequence identity at the nucleotide and amino acid levels, respectively. Mouse Rh mRNA encodes a protein which is 1 amino acid longer (418 aa) than that of human (417 aa). Rh protein was detected in mouse erythrocyte membranes and was comparable in size to human Rh. Mouse erythrocytes do not show serologic reactivity with human Rh antibodies, probably because the greatest divergence between the mouse and the human genes was seen in the predicted extracellular loops, while the transmembrane regions were more conserved. The mouse RH locus consists of only one gene, which is important for future genetic manipulation and which also indicates that the RH gene duplication seen in humans has occurred since the mammalian radiation.”
Source:

https://pubmed.ncbi.nlm.nih.gov/10329015/

See also:

There soon should be a device to test your blood type without drawing blood

Now here is MY question:

How would we know that smell is the sole sense utilized by mice to detect the Rh factor in other mice?

Other studies which could be of interest:
Odor Communication and Mate Choice in Rodents
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5872039/
Latent toxoplasmosis and olfactory functions of Rh positive and Rh negative subjects
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6307871/