I already select a different range of cells throughout the day and check via Vlookup whether account association exists.
If it exists, my vlookup says "true" in columns F and G; if it doesn't my vlookup returns "false"
However, a possible reason why vlookup returns "false" even when account association matches is because of a spacing issue
So, I produced code below which checks to see if the particular columns F and G have any inStr with the word "False".
If any word "False" is detected, a certain trim subprocedure is called to eliminate spacing in my selection.
Detecting "False" string is carried out yet again to make sure that the "False" is now "True" due to the spacing issue being eliminated. If the string "False" still exists after loop iteration, then we have an account mis-association. A message box follows and the code ends
Please, I want to trim my selection only when I detect any string "False" in the adjacent F and G columns ....so my selection, for example, is A10:E14, I only want to detect any "False" strings in F10:G14
Sub myCode()
    Dim iRow As Range, cell As Range
    Set iRow = Range("F2:G100")  '<<<this should be only columns F and G with 
                                    'rows adjacent to my manual selection
    For Each cell In iRow     'for each cell in F and G adjacent to my 
        'selection    
        If InStr(cell.Value, "FALSE") > 0 Then             
            Call Trim_Code
        End If
    Next cell
    For Each cell In iRow
        If InStr(cell.Value, "FALSE") > 0 Then
            MsgBox ("Account Mis-association Found!")
        End If
    Next cell
End Sub
Sub Trim_Code()
      Dim Rng As Range
      Set Rng = Selection
      For Each Cell In Rng    
            Cell.Value = Trim(Cell)    
      Next Cell
End Sub
How do I set my iRow to only adjacent rows of F and G with respect to my selection, and how do I clean up this code to execute faster?
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Solved with kind assistance from PeterT !
Sub Test()
Dim thisWS As Worksheet
Set thisWS = ActiveSheet
Dim Association As Boolean
Association = True
Dim firstRow As Long
Dim lastRow As Long
firstRow = Selection.Cells.Row
lastRow = firstRow + Selection.Cells.Rows.Count - 1
Dim accountChecks As Range
With thisWS
    Set accountChecks = .Range(.Cells(firstRow, 6), .Cells(lastRow, 7))
End With
Dim account As Range
For Each account In accountChecks
    If account = False Then
        Call Trim_Code
    End If
    If account = False Then
        MsgBox "Account Mis-association Found in row " & account.Row & "!"
        Association = False
    End If
Next account
If Association = False Then
    Exit Sub
End If
'proceed to do some crazy code
End Sub
Sub Trim_Code()
  Dim Rng As Range
  Set Rng = Selection
  For Each cell In Rng
        cell.Value = Trim(cell)
  Next cell
End Sub
 
    