Hello CMDR.
A few things about passenger missions that aren’t so plainly laid out when browsing through the mission list.
There are a few different types of passenger missions. The first is bulk passenger missions, which is represented by a plain icon of a briefcase to the left side of the mission listing. The title will say something along the lines of “Transport 9 aid workers.” These passengers are very low risk and do not care if you are scanned.
The second type is rich tourists, and these are what gives everyone headaches. The icon is a briefcase with a crown over it, and the mission title will say something like “Transport Sweaty McBeef and his 4 rich friends.” If the description says that this passenger does not like being scanned, that means you need to be ready with Silent Running and some heat sinks. BE WARNED, regardless of caring about being scanned, a passenger can still be Wanted but the mission description will not tell you this. The only way to find out (as far as I know) is to accept the mission, then view it in your Transactions tab. Wanted passenger missions will be flagged red, and if system authorities scan you, they will open fire and deny you docking access!
Lastly, keep that docking computer powered down if you are transporting shady people. It is not compatible with Silent Running. I learned this the hard way.