שמות ל ,לד: קַ ח־לְׁ ךָ סַמִּים
The Baal HaTurim points out that the last letters of these three words spell the word ChaChoM (wise person). This is an allusion to the Gemara Horios 13b, which says that wine and fragrance gives a person wisdom. It is obvious why the allusion for fragrance is appropriately mentioned (in this verse), but why does the Baal HaTurim mention wine which is not discussed in this verse?
The Chidushei HaRI"M says that people mistakenly assume that a person who speaks a lot is a fool and one who speaks very little is a wise man. This is not the case. When the need arises for one to speak, be it divrei Torah, correcting a wrong, etc., one should speak out. It is wrong to remain silent. When there is no such need one should refrain from speaking. It totally depends upon the situation. A wise person is one who knows when to speak and when to be quiet. (See Koheles 3,7.)
The Gemara Zevachim 87a says that when the wine for the Mikdash libations was poured from barrels into smaller vessels, those pouring would not talk as this was damaging for the wine. On the other hand, the Gemara Kerisus 6b says that when the incense spices were ground, the grinders would say "Ho'deik heiteiv heiteiv hod'eik," since talking is beneficial for ground spices. This is the reason the Baal HaTurim mentions both wine and fragrances as an allusion to wisdom. A wise person needs to be both quiet and talkative, similar to the nature of wine and fragrances.
