Apparently, all they need to do is add some biological sensing unit and it all becomes okay again.
Maybe if they find a way to preserve dogs olfactory nerves in a circuit? Then they can sniff our houses?
No, IIRC the distinction is that they are not allowed to see into our houses without probable cause, regardless of what type of sensor is used.
DOD has been working one this for several years. They have olfactory sensors now available that are designed to smell human beings. These things are intended for use in secure remote areas, monitoring the wilderness ...