The World Federation One Stop Fiqh

Ritual 238

It is not forbidden for a pilgrim in a state of ihram to smell sweet plants, be they used for perfumes, such as jasmine, or others. fragrant wild flowers, such as wormwood, are apparently exempt.

Fruits which have a scent in them, like apples and quinces, one must refrain from smelling them while eating them, as a matter of precaution. The same applies to aromatic oils; it is permissible to use for food the edible ones among them, yet it is advisable not to smell the aroma while eating them, as a matter of ihtiyat.