a formula that makes a pop up for an expiring date

[oldchef325]

I am making a spreadsheet for work i need to make a code that will allow a pop up for several cells for an expiring date would be what ever today is i have been unable to locate a code can anyone help the cell in which i would need for this to work in are most of the sheet it starts at B to K numbers being 3 to 67 and I want a pop up to show when the date expires any help i could get i would appreciate it