Is it permissible to request the placement of an electronic censer in the car to fumigate it in the morning, given the presence of an odor that the mother and younger sisters complain about, despite the availability of cleaning tools for the driver, and does the presence of an adult brother with them affect this?

There is no objection to perfuming a car with incense to remove unpleasant odors, provided that none of the incense clings to the bodies or clothes of adult women. This is because a woman is prohibited from perfuming herself when she goes out. The Prophet, peace and blessings be upon him, said: "Any woman who has used incense should not attend the 'Isha prayer with us."