Thanks for the replies.
(A) I didn't think it was an unreasonable question considering WF anatomy. Especially regarding taste and smell, IMHO.
(B) I did not mean to imply that humans only have five senses or that only five senses are possible. I meant out of the five major senses that human's DO possess, what and to what degree do warforges also possess them.
(C) Does the following imply that they do not natively have a sense of smell?
Tracker Mask (attached component): Crafted to fit above the mouth of a warforged, this thin mask is a peaked band of silvery metal with ventlike structures that fall under the eyes when worn. Originally created for use by warforged reconnaissance troops, the tracker mask grants its wearer the scent ability (see page 314 of the Monster Manual). However, many warforged covet this item because it gives them the ability to smell all scents, not merely those of a creature being tracked. The mask occupies space on the body as goggles and fuses with the wearer’s face when donned, forming a nose ridge with the slatted vents on either side.
Faint divination; CL 5th; Craft Wondrous Item, owl’s
wisdom; Price 18,000 gp; Weight 1 lb.
Source: races of eberron, page 176